class Student {
    private String stuNo;
    private String stuName;
    private int stuAge;
    private static int STUNumber = 0;

    public Student() {
        STUNumber++;
        if (STUNumber < 100) {
            stuNo = "10010" + String.valueOf(STUNumber);
        } else {
            stuNo = "1001100" + String.valueOf(STUNumber);
        }
    }

    public Student(String stuName, int stuAge) {
        STUNumber++;
        if (STUNumber < 100) {
            stuNo = "10010" + String.valueOf(STUNumber);
        } else {
            stuNo = "1001100" + String.valueOf(STUNumber);
        }
        this.stuName = stuName;
        this.stuAge = stuAge;
    }

    public void setStuName(String name) {
        this.stuName = name;
    }

    public void setStuAge(int age) {
        this.stuAge = age;
    }

    public String printStuInfo() {
        String output = stuNo + "," + stuName + "," + String.valueOf(stuAge);
        return output;
    }
}